-Combine lettuce, tomatoes, olives, and radishes in large bowl.
-Combine remaining ingredients, except feta and
anchovies, and pour over salad.
-Sprinkle feta cheese over all and arrange anchovy
fillets on top, if desired.

I
suppose the radishes are a regional variation, but you're
missing cucumbers, celery and peperoncini, of course you
cna fix this to your personal taste, so in my case, add
extra anchovies!

I think your recipe should read
'American/Greek Salad'. The traditional Greek Salad only consists of
tomatoes, onions, cucumbers, feta, olives, balsamic vinegar and of
course salt and olive oil. I am Greek and return home quite often and
have never seen lettuce, etc. except in the United States.